000
00267nam a2200109Ia 4500
008
220201s1993 xx 000 0 eng d
100
_a
MATHUR R C
245
0
_a
SOURCE BOOK OF SCIENCE PROJECT
260
_a
DELHI
_b
ARYA BOOK DEPOT
_c
1993
300
_a
286
942
_2
ddc
999
_c
91382
_d
91382